Summary of Significant Accounting Policies textuals (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Expense Reclass (asu 2017-07)		$ 9,000
Visa Restricted Stock Owned		119
AOCI Attributable to Parent [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reporting Comprehensive Income(2018-02)	$ 13,654	$ 13,654